Table 1.

Sociodemographic characteristics of respondents with each order of presentation.

Characteristics		Study 1		Study 2
		Revised form first (N=86)	Current form first (N=92)	Revised form first (N=103)	Current form first (N=103)
Age (years), mean (95% CI)		42.0 (38.7-45.3)	46.6 (43.4-49.8)	55.2 (52.3-58.1)	55.0 (52.0-8.0)
Female proportion, n (%); 95% CI for %		54 (63); 52-73	61 (66); 56-76	53 (51.4); 41-61	63 (61.2); 51-71
English main language proportion, n (%); 95% CI for %		75 (87); 78-93	87 (94); 88-98	95 (92.2); 85-97	97 (94.2); 88-98
Mean years of education, mean (95% CI)		14.9 (14.2-15.6)	15.2 (14.4-16.0)	14.6 (14.1-15.2)	15.0 (14.3-15.7)
Seen gastroenterologist before? (% yes), n (%); 95% CI for %		61 (71); 60-80	61 (66); 56-76	66 (64.1); 54-73	69 (66.9); 57-76
Colonoscopy before? (% yes), n (%); 95% CI for %		62 (72); 61-81	59 (64); 54-74	67 (65.0); 55-74	66 (64.1); 54-73
Reason for visit, n (%); 95% CI for %
	Seeing a gastroenterologist	—a	—	51 (49.5); 39-59	31 (30.1); 21-40
	Seeing a urologist	—	—	9 (8.7); 4-16	13 (12.6); 7-21
	Accompanying a patient	—	—	43 (41.7); 32-52	59 (57.2); 47-67

^aA question about the reason for the visit was not asked in study 1.